1、UL 55AISBN 0-7629-1005-4Materials for Built-Up RoofCoveringsUnderwriters Laboratories Inc. (UL)333 Pfingsten RoadNorthbrook, IL 60062-2096UL Standard for Safety for Materials for Built-Up Roof Coverings, UL 55AThirteenth Edition, Dated November 19, 2004Summary of TopicsThis new edition of UL 55A is
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21、This Standard consists of pages dated as shown in the following checklist:Page Date1-16 .November 19, 2004NOVEMBER 19, 2004 UL 55Atr2NOVEMBER 19, 20041UL 55AStandard for Materials for Built-Up Roof CoveringsFirst Edition June, 1919Second Edition June, 1924Third Edition March, 1929Fourth Edition Dece
22、mber, 1938Fifth Edition October, 1941Sixth Edition November, 1946Seventh Edition November, 1951Eighth Edition May, 1967Ninth Edition May, 1973Tenth Edition August, 1978Eleventh Edition October, 1983Twelfth Edition July, 1993Thirteenth EditionNovember 19, 2004An effective date included as a note imme
23、diately following certain requirementsis one established by Underwriters Laboratories Inc.Revisions of this Standard will be made by issuing revised or additional pagesbearing their date of issue. A UL Standard is current only if it incorporates themost recently adopted revisions, all of which are i
24、temized on the transmittal noticethat accompanies the latest set of revised requirements.ISBN 0-7629-1005-4COPYRIGHT 1978, 2004 UNDERWRITERS LABORATORIES INC.NOVEMBER 19, 2004MATERIALS FOR BUILT-UP ROOF COVERINGS - UL 55A2No Text on This PageCONTENTSINTRODUCTION1 Scope .52 Glossary .53 General 63.1
25、Units of measurement .63.2 Undated references .6MATERIAL4 Hot-Mopping Asphalt 65 Coal-Tar Pitch 66 Felt 76.1 Organic felt 76.2 Glass-fiber mat (felt) 77 Saturants and Coatings 87.1 Asphalt 87.2 Coal-tar pitch 88 Saturated Felt 88.1 Organic felt 89 Asphalt Coated Glass-Fiber Mat 8FINISHED PRODUCTS10
26、All Products .911 Saturated Felt .911.1 General 911.2 Asphalt-saturated felt 912 Coated Mat 10TEST METHODS13 Softening Point Tests .1113.1 Asphalt test 1113.2 Coal-tar pitch test 1114 Flash Point Tests .1114.1 General .1114.2 Method I 1114.3 Method II 1115 Weight Tests .1115.1 Weight of felt test 11
27、15.2 Weight of glass mat test 1215.3 Percent saturation of felt test 1215.4 Weight of asphalt coating on glass mat test .1315.5 Weight of felt from finished product test .1315.6 Saturation efficiency of organic felt .1416 Percent of Ash in Felt Test .1417 Bending Test .1518 Heating Test .15NOVEMBER
28、19, 2004 MATERIALS FOR BUILT-UP ROOF COVERINGS - UL 55A 3PACKAGING19 General 15MARKING20 General 16NOVEMBER 19, 2004MATERIALS FOR BUILT-UP ROOF COVERINGS - UL 55A4INTRODUCTION1 Scope1.1 These requirements cover the following materials for use in the construction of built-up roof coverings:a) Hot-Mop
29、ping Asphalt For use in the construction of coverings having either no surfacing orutilizing surfacings of cold-application roof coating on inclines not exceeding 12 inches (305mm) to the horizontal foot, and for use in the construction of coverings surfaced with gravel,crushed stone, or crushed sla
30、g, on inclines not exceeding 3 inches (76 mm) to the horizontalfoot.b) Asphalt-Saturated Organic Felt Type 15 (plain or perforated) and Types 20 and 30 (plain),including cap and base sheets.c) Coal-Tar Pitch For use in the construction of coverings surfaced with gravel, crushedstone, or crushed slag
31、, on inclines not exceeding 3 inches (76 mm) to the horizontal foot.d) Coal-Tar Saturated Organic Felt Type 15.e) Asphalt-Coated Glass-Fiber Mat (Felt) Type G1 (ply sheets), Type G2 (cap and basesheets), and Type G3 (granular-surfaced cap sheets).2 Glossary2.1 For the purposes of this standard, the
32、following definitions apply.2.2 FELT, ORGANIC Felt produced by the felting of organic fibers.2.3 MAT (FELT), GLASS FIBER A thin, porous sheet formed of randomly distributed glass fibersbonded with a water-resistant, nonbituminous binder.2.4 SATURATED FELT A single thickness of roofing felt saturated
33、 with an asphaltic or refined coal-tar compound.NOVEMBER 19, 2004 MATERIALS FOR BUILT-UP ROOF COVERINGS - UL 55A 53 General3.1 Units of measurement3.1.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.3.2 Undated references3.2.1
34、Any undated reference to a code or standard appearing in the requirements of this standard shallbe interpreted as referring to the latest edition of that code or standard.MATERIAL4 Hot-Mopping Asphalt4.1 Asphalt shall be free from water.4.2 Freshly-melted asphalt shall be homogeneous. The surface of
35、 the melted asphalt shall not becomevisibly dull due to the separation of oil, grease, paraffin, scale, or similar materials after 1 week of agingat room temperature.4.3 Asphalt shall have a softening point of not less than 135F (57C) and not more than 225F (107C).See Softening Point Tests, Section
36、13.4.4 Asphalt shall have a flash point of not less than:a) 437F (225C) as determined by Method I; orb) 410F (210C) as determined by Method II of the Flash Point Tests, Section 14.5 Coal-Tar Pitch5.1 Coal-tar pitch shall be free from water.5.2 Freshly-melted coal-tar pitch shall be homogenous, havin
37、g a glossy black color. The surface of themelted coal-tar pitch shall not become visibly dull due to the separation of oily constituents after 1 weekof aging at room temperature. Freshly-fractured material shall have a satiny black surface.5.3 Coal-tar pitch shall have a softening point of not less
38、than 130F (54C) and not greater than 155F(68C), as determined by the Softening Point Test, Section 13.5.4 Coal-tar pitch shall have a flash point of not less than:a) 248F (120C) as determined by Method I; orb) 241F (116C) as determined by Method II of the Flash Point Tests, Section 14.NOVEMBER 19, 2
39、004MATERIALS FOR BUILT-UP ROOF COVERINGS - UL 55A66 Felt6.1 Organic felt6.1.1 Organic felt shall be uniformly smooth and, upon splitting or tearing on the bias, shall be sufficientlyfree from knots or lumps of stock that have not been beaten or shredded into fiber in the process ofmanufacture to per
40、mit obtaining the required saturation of the felt (see 8.1.1 8.1.3). It shall also besufficiently free from coarse sawdust, shives, and foreign substances, such as fragments of stone, metal,leather, and rubber.6.1.2 The weight of moisture-free organic felt (desaturated when determined from a sample
41、of thefinished product) shall be not less than:a) 5.2 pounds per 100 square feet (0.253 kg/m2) for Type 15 felt;b) 6.8 pounds per 100 square feet (0.331 kg/m2) for Type 20 felt; andc) 10.0 pounds per 100 square feet (0.488 kg/m2) for Type 30 felt. See 15.1.1 15.1.3.6.1.3 The weight of ash from organ
42、ic felt shall be not more than 10 percent of the weight of themoisture-free felt as determined by the Percent of Ash in Felt Test, Section 16.6.2 Glass-fiber mat (felt)6.2.1 Mat shall be:a) Uniformly thick;b) Free of delaminations, tuftings, oil, and grease; andc) Sufficiently free of wrinkles, torn
43、 edges, tears, and lumps to permit uniform coating of themat (see 9.1).6.2.2 For the purposes of the requirement of 6.2.1:a) Delamination is the separation of the top and bottom strata of mat.b) Tufting is the breaking loose of the upper strata of mat so as to protrude as a flare.6.2.3 The weight of
44、 moisture-free mat (desaturated when determined from a sample of the finishedproduct) shall be not less than 1.0 pound per 100 square feet (0.108 kg/m2). See 15.2.1 15.2.3.6.2.4 The weight of ash from mat shall be not less than 70 percent of the weight of the moisture-free matafter being heated to 1
45、000 25F (538 14C).NOVEMBER 19, 2004 MATERIALS FOR BUILT-UP ROOF COVERINGS - UL 55A 77 Saturants and Coatings7.1 Asphalt7.1.1 An asphalt saturant or coating shall comply with the requirement of 4.4.7.2 Coal-tar pitch7.2.1 Coal-tar saturant shall have a flash point of not less than:a) 159F (71C) as de
46、termined by Method I; orb) 150F (66C) as determined by Method II of the Flash Point Tests, Section 14.8 Saturated Felt8.1 Organic felt8.1.1 The saturation of organic felt shall be thorough and uniform and the felt shall show no unsaturatedspots at any point when 2-inch (51-mm) strips are torn at ran
47、dom on the bias across the entire sheet.8.1.2 The weight of the asphalt saturant introduced into organic felt shall be not less than 1.2 times theweight of the moisture-free felt in the same respective area for Type 15 or 20 felt and not less than 1.5times for Type 30 felt. The weight of the coal-ta
48、r saturant introduced into organic felt shall be not less than1.4 times the weight of the moisture-free felt in the same respective area. See 15.3.1 15.3.3.8.1.3 The saturation efficiency of the organic felt shall be not less than 70 percent for Type 15 or 20asphalt saturated felts. See 15.6.1 15.6.
49、3.8.1.4 The variation in width from the nominal value specified by the manufacturer shall not exceed 1/4inch (6.4 mm).9 Asphalt Coated Glass-Fiber Mat9.1 The individual fibers of coated mat shall be uniformly coated with the asphalt and, if necessary tocomply with the requirement of 10.2, the mat shall be surfaced with a parting agent. Type G1 coated matmay contain pinholes not larger than 1/16 inch (1.6 mm) in diameter. Type G2 coated mat may containpi
